Four Treasures Reference Database
Record No. 28075
Försök På En del Kiesel-Arter, och i synnerhet de hårdare så kallade Äkta Stenar
Experiments on Some Siliceous Species, and in Particular the Harder so-called Genuine Stones
Journal Article
Qvist, B.A. (1768) Försök På En del Kiesel-Arter, och i synnerhet de hårdare så kallade Äkta Stenar. [Experiments on Some Siliceous Species, and in Particular the Harder so-called Genuine Stones] Kongl. Vetenskaps Academiens Handlingar [Proceedings of the Royal Swedish Academy of Sciences], Series 1, Vol. 29, January–March,
ISBN/ISSN: 0023-5377 | Sinkankas/Born No.: NIS/NIB | Language: in Swedish | RWHL
Close Abstract
Hide Keywords
Copy Reference
gems, properties, fusibility, density, specific gravity, hardness, ruby, sapphire, emerald, spinel, topaz, beryl, garnet
Swedish article describing the fusibility and other physical properties of gems. Also includes a table listing the different gems by density and hardness from diamond (1) to zeolite (13). According to Schuh, this hardness scale was modified by Richard Kirwan in his 1784 English edition (First edition) “Elements of Mineralogy”, pp. 171–173 and is considered the first hardness scale ever published in an English book: https://mineralogicalrecord.com/new_biobibliography/kirwan-richard/